Snubber



Feb. 4, 1930. E, 1 DODDS 1,745,662

SNUBBER F1166 Jan. 25, 1925 Patented Feb. y4, 1930 UNITED i STATES PATENT oFF/ICE ETHAN I. kDODDS, F CENTRAL'VALLEY, NEW YORK SNUBBER application mea January 25, 192s.l serial No. 83,7430.

This invention relates to an improved form of snubber or rebound check for the springs of vehicles,y and the present invention is a modification of the device shown in my leopend-ing application entitled "Snubbers, i

' Serial Nar-83,739, filed of even kdate herewith. y Itis an object of this invention to provide an elfective snubber of the utmost simplicity .1G consistent` with proper operation under the 'most severe conditions, thus producing a "snubber that may be easily understood, in-

stalled and serviced. y

It is another Aobject of this invention to i provide an endless strap type snubber or rebound checkconnected between the vehicle frame and springs wherein a rubber block is placedr under compression betweenmembers over which the strap is wound sothat the 2U strap will resist a pully due both to the coinpression resistance of the rubber block and to the increased sliding friction set up between the strap and said members due to the pressure set up by the compression of the rubber. Other and further important objects ofthis invention will be apparent from the disclosures in the specification and the accompanyp ing drawings. Y

This invention (in a preferred form) is Q illustratedin the drawings and hereinafter more fully described. l On the drawings:

, Figure 1 is a vertical section of a lsnubber embodying the preferred form of this `invention the section being taken on the line I-I of Figure 3. n

Figure 2 is a cross section taken on the line I-H. of Figure 1 y [Figure 3 is a. front view or elevation of the snubber with the 'dust cover removed.

50 ent.

' Figure 9 is a view showing how a cylindri- "cal rubber element can be built up as a spiral.

Figure 10 discloses how the rubber element maybe built up of laminations.

As shown on the drawings: n' A base member 1 forming a mounting stud is shouldered and threaded at 2 to receive a 'nut 16, the nut clamping the'vehicle frame l2O againsty the shoulder to secure the 'stud thereto. l The stud'has a keyway 3 cut there-r 60 in to locate a pair of crank or strap supports .'7 which have a corresponding tongue 8 entering the keyway to prevent rotation of the strap supports about the stud. A rubber resilient member 6 is slipped onto the stud be- 65 tween the two strap supports andthe periphery thereof is partly enveloped by two arcuate members 13 provided with inwardly extending arms 14 which are a free lit in holes in the stud on either side of the rubber mem- The strap supports 7 are connected by a bar orbolt 11. A double or endless strap 17 has one loop passing around this bolt 11, the strap then passingup and around the two arcuate members 13 and down to the axle or spring connection 15.

A washer 9 is slipped over the outer end of the stud outside the strapsupport, and if desired a dust cover 18 may be added and 80 held in place by a 'Cotter pin 1() as shown in Figure 1.

The snubber is assembled with the strap under initial tension' so that when the aXle system of a vehicle is deflected the slack in the strap is takenV up by expansion of the resilient rubber member. On the spring rebound e the resulting outward pull on the strap is resisted both by the friction of the strap on f the arcuate members and by the resistance of 99 the rubber to compression or deformation, the/rubber being squeezed or bulged out at the sides due to they arcuate members being forced together by the choking pull of the strap. The resistance of the snubber therefore' builds up rapidly as the strap is drawn out so that the initial resistance at the normal spring position is comparatively slight and leaves the spring system free to absorb slight 100 jolts.

TZ; v ,1,745,662

I am aware ythat manyehanges may be made, and numerous details of construction may be varied through a Wide range Without departing from the principles of this invention, and I therefore do not purpose limiting the patent granted hereon, otherWis'ethan necessitated by the prior art.

I claim as my invention:

1. In a snubber a stud adapted to be sew cured to the frame of a vehicle, a cylindrical rubber cushion mounted on said stud, stiftening members partially enveloping the pe- Y riphery of said cushion7 strap supports nonrotatively mounted on said stud on either l5 side of said cushion and a strap passing i around said stiffening members, one end of said strapbeing secured to said strap'supports and the other end extending to` some part oi' the axle system movable relatively a to said frame. y Y

. 2. In a snubber a stud adaptedto be secured to the frame of a vehicle, a cylindrical rubber' cushion mounted on said stud, lstiening members partially enveloping the periphery 5.5K of said cushion, strap supports non-rotatively mounted on said stud on either Side of said cushion and a strap passing around said stitfn ening members, one end of said strap being ysecured to said strap supports and the other 3g end extending to some part of the aXle system movable relatively to said `frame, and a cover adapted to be secured to said central Vsupporting member.

In testimony whereof. I aliix my signature.

35 c ETHAN I. DoDDs. 

